58 lines
2.0 KiB
JavaScript
58 lines
2.0 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const ConstDependency = require("./dependencies/ConstDependency");
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const NullFactory = require("./NullFactory");
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const jsonLoaderPath = require.resolve("json-loader");
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const matchJson = /\.json$/i;
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class CompatibilityPlugin {
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apply(compiler) {
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compiler.plugin("compilation", (compilation, params) => {
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compilation.dependencyFactories.set(ConstDependency, new NullFactory());
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compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
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params.normalModuleFactory.plugin("parser", (parser, parserOptions) => {
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if(typeof parserOptions.browserify !== "undefined" && !parserOptions.browserify)
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return;
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parser.plugin("call require", (expr) => {
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// support for browserify style require delegator: "require(o, !0)"
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if(expr.arguments.length !== 2) return;
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const second = parser.evaluateExpression(expr.arguments[1]);
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if(!second.isBoolean()) return;
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if(second.asBool() !== true) return;
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const dep = new ConstDependency("require", expr.callee.range);
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dep.loc = expr.loc;
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if(parser.state.current.dependencies.length > 1) {
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const last = parser.state.current.dependencies[parser.state.current.dependencies.length - 1];
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if(last.critical && last.request === "." && last.userRequest === "." && last.recursive)
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parser.state.current.dependencies.pop();
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}
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parser.state.current.addDependency(dep);
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return true;
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});
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});
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params.normalModuleFactory.plugin("after-resolve", (data, done) => {
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// if this is a json file and there are no loaders active, we use the json-loader in order to avoid parse errors
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// @see https://github.com/webpack/webpack/issues/3363
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if(matchJson.test(data.request) && data.loaders.length === 0) {
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data.loaders.push({
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loader: jsonLoaderPath
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});
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}
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done(null, data);
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});
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});
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}
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}
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module.exports = CompatibilityPlugin;
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